Man when you're killing one guy and the other RUNS for you I felt my heart-rate spike. Could have totally used some music but then again I was just listening to my own stuff and didn't have to pause it so the vibe was still there. I don't know why the game is called uncertainty, because I was pretty certain with what color *I* had to be to win lol. Overall pretty enjoyable, I got through waves pretty quickly by hiding on the other side of the screen when my health was low and shooting till I heard the plonk noise silence haha. Small suggestion. If I get stuck on rocks and such, my bullets should too!